Electric drive



July ,2, 1929.- I l c HEI'QMAN 1.719.226

- ELECTRIC DRIVE Filed Oct. 31, 1927 Patented July 2, 1929.

' UNITED sTA This invention relates to an electric drive for flexibleshafts or the like, and particularly It is also an object of theinvention to pro- 3 vide astrueture of this character .having animproved bearing means to facilitate transportation of the drive fromone location to another.

WVith the foregoing and other objects in view, I have devised anelectric drive, the preferred form of which is illustrated in theaccompanying drawing, forming a part of this specification. In thisdrawing,

- Fig. 1 is a frontelevation of the device, a portion of the base orstandard being broken away. e

Fig. 2 is a top plan view of the device with a portion of the yokebroken away to show i' means of suitable detachable means 29 to aflexible shaft 30 for driving'any'suitable type the catch, and

Fig. 3 is an end elevation but with the drive pulleys shown in dottedlines.

This device comprises an electric motor including a housing 10 andhaving a rotary drive shaft 11. This motor is mounted on a base 12 whichis preferablyswiveled on a stand 13. This stand has three legs 14 torest on the floor or any suitable support as a bench, and the base isswiveled to this stand by the central swivel stud 15 so that the motorand the shaft operated thereby may be turned about an upright axis.

The device also includes a yoke 16 which forms a convenient means forcarrying the device and also carries the adjustable counter shaft. Thisyoke as shown is of substantially inverted U-shape with its side membersor arms 17 and 18 secured to the opposite sides of the motor housing 10,as for instance by I screws 19, and it extends sufficiently above thehousing to carry a support 20 for a counter shaft 21 runningsubstantially parallel with the motor shaft, and the connecting bar forthe yoke is shaped to form a handle 22 above the counter shaft support.The counter shaft support ispivoted or hinged tothe arm 17 as shown at23, and extends across the yoke above the housing to the other arm 18and projects forwardly therefrom to provide a handle 24. The forwardportion of snares TES "'PATENT""OFFICE.Y

nLncTRIc DRIVE.

Application filed October 31, 1927. SerialNo. 230,006;

this support hasa recess 39 for the guide por tion 40 of the yoke andthis portion is held inthe recess by a cap 41. Thusthe counter shaftsupport is guidedby the yoke in its up and down movements and heldagainst latera]. movements and the lateral strains on the shaft supportare not all carried by its hinge connection to the yoke. The supportcarries suitable bearings 25 for the counter shaft which are spacedforwardly from the hinge 23 so that as the forward end of this supportis swung up and down by the handle 24 the counter shaft is moved fromand tow'ardthe motor shaft, as indicated in dotted lines, Fig. 3. Thearm 18 of theyoke and the support 20 are provided with any suitable Itype of cooperating means for retaining the support in differentelevated positions. That shown comprises a catch lever 26 pivoted to thesupport and operating a spring pressed pin27 whose inner end may projectinto 7 different openings 28 in the armof the yoke.

However, any suitable type of catch means may be used if desired.

The'counter shaft may be connected by of portable tool, and this countershaft is driven from the motor shaft by anysuitable type of drive.- Inthe present arrangement the counter shaft and the motor shaft aresupporting block 34 for carrying the electric 1 socket and switch 35which is connected through a lead cord 36 to the motor. The socket maybe connected by any usual type of plug 37 and flexible lead 38 to anysuitable type of outlet receptacle from a source of electric currentsupply.

It will be apparent from the foregoing description that thisarrangementprovides a very simple, rigid structure which may be easily carried fromplace to place, and that the mounting for the counter shaft alwaysretains it in proper relation to the motor sh aft to secure the properdriving. Also this counter shaft may be easily and quickly shifted forshifting the belt and giving different feration of the flexible shaftand the tool driven W thereby.

Having thus set forth the nature of my invention, what I claim is:

1. In an electric drive. a motor including a housing and a rotary driveshaft, a yoke extending on the opposite sides of the housing and securedthereto and extending over the top of the same where it is shaped toform a handle abovethe housing, a support hinged to one side of saidyoke to swing up and down, a counter shaft mounted in said support,cooperating means on the support and the other side of the yoke toretain the sup- "port and shaft at difierentelevations, and

driving connection between the motor and counter shafts.

2. In an electric drive, a motor including a housing and a drive shaft,an inverted substantially U-shaped yoke having its arms on the oppositesides of the housing and secured thereto and its connecting bar forminga handle over the housing, a shaft support hinged to one arm of saidyoke and extending across to the other arm, cooperating means carried bythe latter arm and the support to retain the support in differentpositions. a counter shaft mounted on the support, and a drivingconnection between the motor and counter shafts.

3. In an'electric drive, a motor including a housing and a drive shaft,uprights on oppo-v site sidesof the housing and secured theret-o, ashaft support pivoted to one of said uprights to swing toward and fromthe motor, cooperating means on the support and the other upright toretain the support in different positions with respect to the motor. acounter shaft mounted on the support, and a driving connection from themotor shaft to the counter shaft.

4. In a portable electricdrive, a motor in cluding a housing and a driveshaft, a counter shaft substantially parallel with the motor shaft, asupport for the counter shaft connected with the housing and having ahandle extending over the housing for carrying, means for shifting thecounter shaft toward and from the motor shaft, and a driving connectionbetween the two shafts.

5, In a portable electric drive, a motor includinga housing and a driveshaft, a support pivotally mounted with respect to themotor, a countershaft mounted on the support substantially parallel with the drive shaftand spaced laterally from said pivot, means for swinging the support onits pivot to move the counter shaft toward and from the drive shaft,means for securing the support in different adjusted positions, and adrive connection between the two shafts.

6. In an electric drive. a motor including a housing and a drive shaft,a yoke having arms on opposite sides of the housing and connectedtherewith and a connection between said arms over the motor forming ahandle, a support pivoted to' one of said arms'and extending across tothe other arm, said latter arm and the support being provided withcooperating guide means to guide the support for vertical swingingmovements about its pivot, means for securing the support in different.adjusted positions, a counter shaft mounted on the support, and 'a driveconnection between the two shafts.

CLAUDE A. HERMAN.

